What's funny is your brain understands but your em

tions have clouded your perception of how time works.
Nothing that happened after he got traded can change his value at the time he was traded. When he was traded, Nephew had successfully tanked his value. Teams had injury concerns and non-L.A. teams didn't know if he was willing to re-sign -- plus his overall character was in question. As a result, luminaries such as Terry Rozier, Markelle Fultz, Dario Saric, Kyle Kuzma, etc. were taken off the table in trade discussions.
Whether Neph went on to never play basketball again or went on to win the next 12 NBA championships doesn't change his value at the time of the trade. Whether the trade looks good or looks bad in retrospect also doesn't change his value ...
or change anything for anyone who isn't wallowing in sorrow about the breakup.
She left. She changed the locks. Looks like she might get married. She's happy. Move on, tbh.